<template>
    <el-container style="min-height: 100vh">
      <el-aside width="sideWidth+'px'" style="background-color: rgb(255,255,255)"> <!--width="sideWidth+'px'"导航栏动态宽度-->
        <el-menu :default-openeds="['1', '3']" style="min-height: 100%; overflow-x: hidden"
        background-color="rgb(48,65,86)"
                 text-color="#fff"
                 active-text-color="#ffd04b"
                 :collapse-transition="false"
                 :collapse="isCollapse"
        > <!--active-text-color="#ffd04b"点击导航栏文字时候高亮黄色。  :collapse-transition="false"关闭动画（为了收缩导航栏做铺垫）
        :collapse="isCollapse"控制展开折叠
        -->
          <div style="height: 60px; line-height: 60px; text-align: center">
            <img src="../assets/logo.png" alt="" style="width: 30px;position: relative; top: 10px;margin-right: 10px">
            <b style="color: white" v-show="logoTextShow">后台管理系统</b>
          </div>
          <el-submenu index="1">
            <template slot="title">
              <i class="el-icon-message"></i>
              <span slot="title">导航一</span>
            </template>
            <el-menu-item-group>
              <template slot="title">分组一</template>
              <el-menu-item index="1-1">选项1</el-menu-item>
              <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
              <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
              <template slot="title">选项4</template>
              <el-menu-item index="1-4-1">选项4-1</el-menu-item>
            </el-submenu>
          </el-submenu>
          <el-submenu index="2">
            <template slot="title"><i class="el-icon-menu"></i>
              <span slot="title">导航二</span>
            </template>
            <el-menu-item-group>
              <template slot="title">分组一</template>
              <el-menu-item index="2-1">选项1</el-menu-item>
              <el-menu-item index="2-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
              <el-menu-item index="2-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="2-4">
              <template slot="title">选项4</template>
              <el-menu-item index="2-4-1">选项4-1</el-menu-item>
            </el-submenu>
          </el-submenu>
          <el-submenu index="3">
            <template slot="title"><i class="el-icon-setting"></i>
              <span slot="title">导航三</span>
            </template>
            <el-menu-item-group>
              <template slot="title">分组一</template>
              <el-menu-item index="3-1">选项1</el-menu-item>
              <el-menu-item index="3-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
              <el-menu-item index="3-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="3-4">
              <template slot="title">选项4</template>
              <el-menu-item index="3-4-1">选项4-1</el-menu-item>
            </el-submenu>
          </el-submenu>
        </el-menu>
      </el-aside>

      <el-container>
          <el-header style="font-size: 12px;border-bottom: 1px solid #ccc; line-height: 60px;display:flex">
            <div style="flex: 1; font-size: 25px">
                  <!-- 👆收缩栏图标-->
              <span :class="collapseBtnClass" style="cursor: pointer" @click="collapse"></span>
            </div>
          <el-dropdown style="width: 100px;cursor:pointer">
            <span>王小虎</span><i class="el-icon-arrow-down" style="margin-left: 5px"></i>
            <el-dropdown-menu slot="dropdown">
              <el-dropdown-item>个人信息</el-dropdown-item>
              <el-dropdown-item>退出</el-dropdown-item>
            </el-dropdown-menu>
          </el-dropdown>

        </el-header>
        <el-main>
              <!--下面这个div盒子是搜索框和搜索按钮 -->
          <div style="margin: 10px 0">
            <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"></el-input>
              <el-button class="ml-5" type="primary">搜索</el-button>
          </div>

              <!--  下面这个div盒子是新增、批量删除、导入导出按钮的  -->
          <div style="margin: 10px 0">
            <el-button type="primary">新增<i class="el-icon-circle-plus-outline"></i></el-button>
            <el-button type="danger">批量删除<i class="el-icon-remove-outline"></i></el-button>
            <el-button type="danger">导入<i class="el-icon-bottom"></i></el-button>
            <el-button type="danger">导出<i class="el-icon-top"></i></el-button>
          </div>

          <el-table :data="tableData" border stripe: header-cell-class-name="headerBg">
            <el-table-column prop="date" label="日期" width="140">
            </el-table-column>
            <el-table-column prop="name" label="姓名" width="120">
            </el-table-column>
            <el-table-column prop="address" label="地址">
            </el-table-column>
              <!-- 表格里面添加编辑和删除的按钮  -->
            <el-table-column label="操作">
              <template v-slot="scope">
              <el-button type="success">编辑 <i class="el-icon-edit"></i></el-button>
              <el-button type="danger">删除 <i class="el-icon-remove-outline"></i></el-button>
              </template>
            </el-table-column>


          </el-table>
          <!--下边这个div盒子是添加进来可以分页的代码 -->
          <div style="padding: 10px 0">
            <el-pagination

                :page-sizes="[5, 10, 15, 20]"
                :page-size="10"
                layout="total, sizes, prev, pager, next, jumper"
                :total="400">
            </el-pagination>
          </div>
        </el-main>
      </el-container>
    </el-container>

</template>

<script>
// @ is an alias to /src
import HelloWorld from '@/components/HelloWorld.vue'

export default {
  name: 'HomeView',
  data() {
    const item = {
      date: '2016-05-02',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1518 弄'
    };
    return {
      tableData: Array(20).fill(item),
      collapseBtnClass:'el-icon-s-fold',
      isCollapse:false,
      sideWidth:200, //动态收缩导航栏初始值200
      logoTextShow:true,
      headerBg:'headerBg'
    }
  },
  methods:{
    collapse(){ //点击收缩按钮触发
      this.isCollapse = !this.isCollapse
      if (this.isCollapse){ //收缩
        this.sideWidth = 64
        this.collapseBtnClass='el-icon-s-unfold'
        this.logoTextShow=false
      }else {  //展开
        this.sideWidth = 200
        this.collapseBtnClass='el-icon-s-fold'
        this.logoTextShow=true
      }
    }
  }
}
</script>

<!--顶部的横栏颜色定义-->
<style>
.headerBg{
  background: #ccc !important;
}
</style>